Have an annual contract for house HVAC, generator and water treatment system for two annual 'free' visits to tune up of AC, furnace and Aprilaire humidifier , water treatment + salt and generator, so we get very prompt service. Also, have a no service call cost agreement. Basically our monthly fixed cost prepays for the above + buys peace of mind. In this instance, and by sheer coincidence, spotted a damp area beneath the well intake nipple connection to the drawdown tank on a Sunday afternoon. Called on a Sunday and they were out early Monday; diagnosed the problem as a galvanized pipe connection that had begun to rust through. After agreeing to the repair cost [an SOP when using the firm], repair was made within an hour using brass and other non-corrosive materials. This service was similar to experience on other service calls - prompt and efficient, getting the job done on the first try. However, we believe their cost is usually a bit on the high side versus one-off service call, but we are willing to trade that drawback for assurance of prompt, reliable service at a moments notice.